Hello gentlemen! Yes I know the forum is generally for home A/V but I thought you might like to see my madness which also carries over onto four wheels. I get bored from time to time and tell myself "it's possible to get things to sound good in the car" and before I know it a project is set in place. I've been involved with fabrication voodoo for twenty years now. The pillars are constructed by all manner of demonic alchemy including epoxies, fiberglass/ reinforced filler, expanding urethane foam, glazing putty, texture spray, spray paint, and a little wood for good measure. Enjoy the build pics!